Method for simultaneously determining multiple preservatives in exported vegetables

A method of determination and technology of preservatives, applied in the field of chemical analysis and detection, can solve the problems of vegetable preservation quality decline, economic loss, easy spoilage and mildew, etc., and achieve short time consumption, high accuracy and precision, and simple detection steps Effect

Active Publication Date: 2015-01-28
重庆海关技术中心
View PDF1 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Long-distance transportation of inland vegetables for export is prone to spoilage and mildew. Irregular use or abuse of vegetable preservatives may lead to such drugs exceeding the standard and endangering people's health
Numerous testi

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for simultaneously determining multiple preservatives in exported vegetables
  • Method for simultaneously determining multiple preservatives in exported vegetables
  • Method for simultaneously determining multiple preservatives in exported vegetables

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0053] The specific implementation of the present invention will be further described below in conjunction with the examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0054] 1) extract

[0055] Use a homogenizer to make vegetable homogenate from the original vegetables, weigh 10.00g vegetable homogenate (accurate to 0.01g) into a 50mL offline tube, add 20mL n-hexane-ethyl acetate (1+2, V / V) solution , vortex and mix for 2 minutes, shake horizontally for 5 minutes, then add 5.00g (accurate to 0.01g) sodium chloride, vortex and mix again for 1min, 5000r / min offline for 3min, draw 10mL supernatant Ⅰ into a 15mL offline tube, To be purified.

[0056] 2) Purify the sample

[0057] Weigh 100mg of ethylenediamine-N-propylsilane (PSA, 60μm) and 500mg of anhydrous sodium sulfate into 10mL of supernatant Ⅰ, vortex and mix for 2min, 5000r / min off-line for 3min, draw supernatant Ⅱ into 25mL...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a method for simultaneously determining multiple preservatives in exported vegetables. The method comprises steps of extracting, purifying, concentrating, ultra performance liquid chromatography-mass spectrum/mass spectrum (UPLC-MS/MS) determination, etc. The method can simultaneously determine eighteen preservatives including imazalil, chlorpyrifos, carbendazol, thiabendazole, prochloraz, pyrimethanil, myclobutanil, flusilazole, propiconazole, triadimefon, iprodione, fenbuconazole, methyl p-hydroxybenzoate, ethyl p-hydroxybenzoate, propyl p-hydroxybenzoate, butyl p-hydroxybenzoate, ethyl naphthol and p-phenylphenol. The method for simultaneously determining multiple preservatives in exported vegetables disclosed by the invention has the advantages of simple and convenient steps, high accuracy and high precision.

Description

technical field [0001] The invention belongs to the field of chemical analysis and detection, and in particular relates to a simultaneous determination method of multiple preservatives in export vegetables. Background technique [0002] Vegetables are one of the essential foods in people's daily diet. They can provide various vitamins and minerals necessary for the human body, and play an important role in the residents' diet. Eating more vegetables has many functions such as health care and disease prevention, cancer prevention and treatment, nutrition enhancement, digestion promotion, and blood vessel softening. However, during field production, vegetables are often infected by microorganisms such as fungi and pathogenic bacteria, resulting in easy mildew and corruption after picking. Therefore, preservatives play an important role after picking vegetables. Preservatives are often made into various preparations or sprayed on the surface of vegetables, or directly soaked i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G01N30/02G01N30/14
Inventor 李贤良曹淑瑞郗存显唐柏彬周雪张雷王国民
Owner 重庆海关技术中心
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap